TY - GEN
T1 - Single-chamber mini-solid oxide fuel cells operated at a lower temperature
AU - Min, Ji Hyun
AU - Ahn, Sung Jin
AU - Moon, Jooho
AU - Kim, Joosun
AU - Lee, Hae Weon
PY - 2007
Y1 - 2007
N2 - The performance characteristics of a single-chamber solid oxide fuel cell (SOFCs) with micro-patterned electrode structures on the disc-type electrolyte were investigated. We selected Sm0.2Ce0.8O2-x (samarium doped ceria, or SDC) as an electrolyte, SDC-NiO cermat as an anode, and SDC-Sm0.5Sr0.5CoO3 (samarium strontium cobaltite) as a cathode for low operating temperatures (500-600°C). To fabricate complex micro-patterned electrodes on electrolytes, we used microfluidic lithography. First, patterned NiO-SDC anode was sintered at 1350°C for 4 hours, then SDC-SSC cathode was patterned and sintered at 1050°C for 8 hours, resulting in a coplanar-type, single-chamber SOFC in which the interdigitated electrode has a 100-μm line width and an anode-to-cathode distance of 100 μm. A reduction condition was proposed below 350°C using humidified hydrogen gas. The shape of electrode and microstructure was observed by scanning electron and optical microscopes. I-V characteristics of the SOFC were measured using a propane-air mixture gas by a DC source measure unit.
AB - The performance characteristics of a single-chamber solid oxide fuel cell (SOFCs) with micro-patterned electrode structures on the disc-type electrolyte were investigated. We selected Sm0.2Ce0.8O2-x (samarium doped ceria, or SDC) as an electrolyte, SDC-NiO cermat as an anode, and SDC-Sm0.5Sr0.5CoO3 (samarium strontium cobaltite) as a cathode for low operating temperatures (500-600°C). To fabricate complex micro-patterned electrodes on electrolytes, we used microfluidic lithography. First, patterned NiO-SDC anode was sintered at 1350°C for 4 hours, then SDC-SSC cathode was patterned and sintered at 1050°C for 8 hours, resulting in a coplanar-type, single-chamber SOFC in which the interdigitated electrode has a 100-μm line width and an anode-to-cathode distance of 100 μm. A reduction condition was proposed below 350°C using humidified hydrogen gas. The shape of electrode and microstructure was observed by scanning electron and optical microscopes. I-V characteristics of the SOFC were measured using a propane-air mixture gas by a DC source measure unit.
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U2 - 10.1149/1.2729189
DO - 10.1149/1.2729189
M3 - Conference contribution
AN - SCOPUS:45249117463
SN - 9781566775557
SN - 9781566775540
T3 - ECS Transactions
SP - 947
EP - 953
BT - ECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
T2 - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
Y2 - 3 June 2007 through 8 June 2007
ER -